package spring.boot.demo;

import java.util.Map;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;

import org.hibernate.jpa.internal.EntityManagerFactoryRegistry;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
		entityManagerFactoryRef="entityManagerFactoryPrimary",
		transactionManagerRef="transactionManagerPrimary",
		basePackages={"spring.boot.demo.domain.p"}) //设置repository所在位置
public class PrimaryConfig {

	@Autowired 
	@Qualifier("primaryDataSource")
	private DataSource primaryDataSource;
	
	@Autowired
	JpaProperties jpaproperties;
	
	public Map<String,String> getVendorProperties(DataSource dataSource){
		return jpaproperties.getHibernateProperties(dataSource);
	}
	
	@Primary
	@Bean(name="entityManagerFactoryPrimary")
	public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder){
		return builder.dataSource(primaryDataSource)
				.properties(getVendorProperties(primaryDataSource))
				.packages("spring.boot.demo.domain.p")	//设置实体类所在位置
				.persistenceUnit("primaryPsistenceUnit")
				.build();
	}
	
	@Primary
	@Bean(name="entityManagerPrimary")
	public EntityManager entityManager(EntityManagerFactoryBuilder builder){
		return entityManagerFactoryPrimary(builder).getObject().createEntityManager();
	}
	
	@Primary
	@Bean(name="transactionManagerPrimary")
	public PlatformTransactionManager transactionManagerPrimary(EntityManagerFactoryBuilder builder){
		return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());
	}
	
}
